Mobile crusher

Abstract

A mobile crusher includes: a crusher having a fixed jaw and a swing jaw and adjusting an outlet gap between lower ends of the fixed jaw and the swing jaw, the crusher crushing raw materials by swing movement of the swing jaw toward the fixed jaw and discharging the raw materials crushed by the crusher from the outlet gap to produce crushed materials; a work implement disposed on an upper stream or a lower stream of the crusher to produce the crushed materials; and a controller that controls a work implement speed of the work implement depending on the outlet gap.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a mobile crusher.[0003]2. Description of Related Art[0004]In a typical mobile crusher including a crusher for crushing raw materials, the raw materials conveyed by a feeder are crushed to a predetermined particle size and the crushed materials are discharged by a conveyor as products (For example, Document 1: JP-A-11-10023). When a jaw crusher is used, the particle size of the crushed materials is determined by adjusting an outlet gap (from which the crushed materials are discharged out of the crusher) between a lower end of a swing jaw and a lower end of a fixed jaw. At this time, the particle size of the crushed materials is increased when the outlet gap is enlarged. Thus, an operating quantity (a crushing throughput per hour) of the crusher for crushing raw materials is usually increased. Conversely, when the outlet gap is shrunk, the particle size of the crushed materials is decrease...

AI Technical Summary

Benefits of technology

[0006]An object of the invention is to provide a mobile crusher capable of reducing energy loss and fuel consumption when a crushing throughput is small.

[0008]Since the controller that controls the work implement speed is provided, the speed of the work implement can be controlled by the controller depending on the opening degree of the gap (outlet gap) between the lower ends of the fixed jaw and swing jaw of the crusher. The particle size of the crushed materials depends on the opening degree of the outlet gap and the operating quantity depends on the particle size of the crushed materials. Accordingly, the work implement can be decelerated when the operating quantity of the crusher that crushes the raw materials is small. Thus, energy loss from the work implement can be reduced and therefore fuel consumption can be reduced.

Problems solved by technology

Thus, the delivery speed is too fast when the crushed materials having a small particle size is delivered, so that conveying efficiency is lowered and energy loss is increased.

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